Search:
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
knee-jerk (n.)
patellar reflex, a neurological phenomenon discovered and named in 1876; see
knee
(n.) +
jerk
(n.1) in the medical sense. The figurative use appeared soon after the phrase was coined.